CN2110251U - Automatic alarm shutoff apparatus for combustible gas leak - Google Patents
Automatic alarm shutoff apparatus for combustible gas leak Download PDFInfo
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- CN2110251U CN2110251U CN 92201529 CN92201529U CN2110251U CN 2110251 U CN2110251 U CN 2110251U CN 92201529 CN92201529 CN 92201529 CN 92201529 U CN92201529 U CN 92201529U CN 2110251 U CN2110251 U CN 2110251U
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Abstract
The utility model relates to a control device for detecting the combustible gas leak, warning and cutting off leak gas source, comprising an automatic detection alarm control part and a cutting off the leak gas source part. The utility model can not only detect the combustible gas leak in time but also send out acoustooptical alarm; an exhaust air apparatus is started up; the leak gas source is cut off. The utility model has the functions of a doorbell, etc. and provides an effective safety apparatus for widely users using gas.
Description
The utility model relates to a kind ofly can in time detect, report to the police, start air draft when combustible gas leakage, turn-off leaking source, and the valve automaton is closed in the warning that has the doorbell function concurrently.
Along with town gas, the great widespread use of liquefied petroleum gas (LPG), be poisoned to death owing to gas leak causes, burn, accident such as blast occurs repeatedly, in order to protect people's lives and properties, increase to use gas safety, all kinds of flammable gas alarms are gone on the market one after another, when gas leak except sending warning, also have and start the function that fan carries out air draft, but, its shortcoming be the gas leak source still at leakage gas, when personnel not the time danger that all accidents take place still arranged; In addition, some commercially available gas leak detectors also can send the chimes of doom of " pout, pout, pout " at the yellow rice wine steam when contacting instantaneous and the smog crossed or the cooking, increase unnecessary fidgetyly to the user, and the user who has also thinks gas leak and carries on a shoulder pole frightened uneasy.
The utility model innovation design, can be in chronological order when coal gas continues to leak, the warning of flashing earlier, restart exhaust ventilation, after send audible alarm, automatically shut down leaking source according to setting time at last, thereby assisting users prevents that the person that may cause because of gas leak is poisoned or the generation of accident such as combustion explosion more effectively, in addition, to instantaneous and measure that the smog crossed or yellow rice wine steam have also taked to avoid sending false alarm, avoid and reduce the fidgety and dislike of bringing to the user therefrom.
This combustible gas leakage automatic alarm and cuiting off device, by automatic detection, sound and light alarm, output drives the electric controlling alarm part of electric signal and carries out the shut-off valve that automatically shuts down leaking source and partly form.
Accompanying drawing 1 is the cut-open view of the shut-off valve of combustible gas leakage automatic alarm and cuiting off device.
Accompanying drawing 2 is detection, the warning of combustible gas leakage automatic alarm and cuiting off device, the electric circuit diagram of control section.
Accompanying drawing 3 is structural drawing of a kind of shut-off valve of combustible gas leakage automatic alarm and cuiting off device.
Accompanying drawing 4 is structural drawing of another shut-off valve of combustible gas leakage automatic alarm and cuiting off device.
Accompanying drawing 5 is structural drawing of another shut-off valve of combustible gas leakage automatic alarm and cuiting off device.
Accompanying drawing 6 is another kind of electromagnet tripping mechanism synoptic diagram.
Accompanying drawing 7 is another valve pocket air intake opening sealed structure chart.
Accompanying drawing 8 is structural drawing of another shut-off valve of combustible gas leakage automatic alarm and cuiting off device.
Specifically describe below in conjunction with accompanying drawing:
The shut-off valve part of this as shown in Figure 1 combustible gas leakage automatic alarm and cuiting off device, comprise a reduction valve (10) and connector (11), an A.C.D. is arranged between reduction valve and connector, its valve pocket (14) fuses with the valve body (17) of reduction valve, clip diaphragm seal (9) between valve gap (8) and the valve pocket (14), available several screws are fastening in addition, diaphragm seal separates valve pocket and valve gap, valve rod (5) is from bonnet cap (6), the centre of valve gap (8) and diaphragm seal (9) is passed, valve rod and diaphragm seal are tightly connected, this can be compressed by packing ring and nut, the sealing block that the bottom of valve rod is being fixed (12) faces the air admission hole (13) of valve pocket, sealing block can be with resilient material such as rubber or plastics, air admission hole (13) communicates with the air inlet connector (11) of valve, connecting hole on the valve pocket sidewall (15) communicates with the air admission hole (16) of reduction valve, bonnet cap relies on a screw thread to be spun on the valve gap, stage clip (7) is pressed on the back-up ring on the diaphragm seal (9) by bonnet cap, rely on the pressure of stage clip, the promotion valve rod is downward, makes the sealing block (12) of valve rod end block the air admission hole (13) of valve pocket.The nut (4) that resets is fixed on the valve rod upper end, its edge is blocked by the moving iron core (3) of electromagnet (2), at this moment, sealing block (12) leaves air admission hole (13), the combustible gas leakage automatic alarm and cuiting off device is in open mode, and the moving iron core of electromagnet is released by electromagnet spring (1).
The detection of this as shown in Figure 2 combustible gas leakage automatic alarm and cuiting off device, the controlling alarm part is by rectifying and voltage-stabilizing part (I), sensor sample part (II), start air draft and audible alarm, doorbell part (III), flashing light alarm closes valve portion (IV) with startup, and indicating section compositions such as (V) glistens behind the valve of pass:
With the civil power step-down, diode D1-D4 rectification, capacitor C 1 filtering, integrated package of pressure-stabilizing IC1 voltage stabilizing provide the power supply that detects control section to rectifying and voltage-stabilizing part (I) by power transformer B;
Sensor sample part (II) is taken a sample by the sensor MQ dividing potential drop of connecting with R1, Rk, and R1 is last and thermistor Rt arranged, can the compensate for ambient temperature to the influence of MQ sensitivity; Sensor is high-impedance state in clean air, sampling voltage V1 is a noble potential, greater than 1/2VDD, warning switching off device place monitored state, when touching reducibility gas such as certain density coal gas, liquefied petroleum gas (LPG) or smog, yellow rice wine steam as sensor MQ, sensor resistance descends rapidly and is low resistance state, the V1 current potential descends less than 1/2VDD, not gate F1, the F7 upset that links to each other with sampled voltage V1, warning switching off device door begins to enter duty, adjusts the detection sensitivity that Rk can regulate sensor;
Start air draft, audible alarm and doorbell part (III), a hex inverter IC2 is arranged when sensor MQ touches inflammable gas, sampled voltage V1, less than 1/2VDD, the not gate F1 upset output high level 1 that links to each other with V1, charge to capacitor C 3 by resistance R 2, when C3 charging voltage during greater than 1/2VDD, not gate F6 upset output terminal is low level O, triode BG1 obtains the bias voltage conducting, relay J 1 adhesive, the closed output of normally opened contact J1-1 electric signal, CZ is the exhaust fan socket, be connected on the starting fan on the CZ socket, inflammable gas is discharged, regulate R2, the value of C3 just adjustable sensor touches reducibility gas to starting air draft, the time of sending alarm sound, to instantaneous and smog that cross, the unlikely sound that sends false alarm of yellow rice wine gas is opened and is closed down scavenger fan when normally cooking and finished by hand switch K;
Simultaneously, when not gate F6 output terminal is low level O, diode D7 ends, by not gate F4, F5, resistance R 5, capacitor C 4 and F2, F3, R7, two multivibrator vibrations that C5 forms, the output signal of oscillator promotes loudspeaker Y and sends " pouting; pout; pout ... chimes of doom; be connected in series by resistance R 6 and diode D8 between two vibrations; be provided with bell button AN1 between the anode of D8 and the VSS of interruption through triode BG2 amplification, connect AN1, D8 ends, by F2, F3, R7, the oscillator vibration that C5 forms is amplified the promotion loudspeaker Y through BG2, according to bell button AN1, the length of turn-on time and trip time and send interrupted doorbell sound;
Drive and close valve, flashing light alarm part (IV), a hex inverter IC3 is arranged, when sensor MQ contact inflammable gas, be reduced to 1/2VDD under the V1 current potential, the not gate F12 upset that links to each other with V1, output high level 1, charge to capacitor C 6 by resistance R 9, when charging voltage during greater than 1/2VDD, not gate F7 upset is output as O, not gate F8 upset is output as high level 1, not gate F9 upset is output as low level O, triode BG3 obtains bias voltage and conducting, relay J 2 adhesives, the coil of the electromagnet (2) of the closed and contact shut-off valve of normally opened contact J2-1, the moving iron core of electromagnet is inhaled into, reduction nut (4) is threaded off, valve rod (5) moves downward under stage clip (7) effect, promotes sealing block (12) air admission hole (13) is blocked, thereby reach the purpose that automatically shuts down leaking source, prevent the generation of the personal property accident that combustible gas leakage may cause more safely and effectively, regulate R9, the value of C6 makes it greater than R2, the value of C3 makes the startup air draft of warning switching off device, send the certain hour afterwards of reporting to the police, just export electric signal when inflammable gas still leaks, carry out and close valve events; Shut-off valve electromagnet (2) is once getting, rely on spring (7) to keep off state after turn-offing leaking source, between not gate F8 output terminal and F9 input end by a differentiating circuit of forming by capacitor C 7, resistance R 10, because the discharge process of resistance R 10, the input terminal voltage of not gate F9 descends gradually, when dropping to less than 1/2VDD, not gate F9 output terminal reverts to high level 1 again, relay J 2 is finished driving A.C.D. action back dead electricity, shut-off valve electromagnet (2) dead electricity relies on spring (7) to keep off state;
Not gate F12 output terminal is low level O at ordinary times, diode D11 conducting, by F10, F11, R13, C8 forms shakes and is full of the device place and stops situation, F11 is output as 1, F10 is output as O, triode BG4 obtains bias voltage and conducting, LED 3 gets electric luminous for a long time, electromotion pilot lamp as warning switching off device energized, when not gate F12 upset is output as high level 1, diode D11 ends, by F10, F11, R13, the oscillator vibration that C8 forms makes LED 3 send one bright one dark flashing light alarm signal by triode BG4 amplification, gets rid of clear up to inflammable gas, when sensor MQ recovered high-impedance state, light emitting diode just recovered shinny energising indicating status of normal phase;
Flashing light alarm indicating section (V) behind the valve of pass, one two input four Sheffer stroke gate IC4 are arranged, by Sheffer stroke gate YF1, YF2 forms bistable circuit, the input end of Sheffer stroke gate YF1 is for putting 1 end, output terminal with not gate F9 links to each other, when MQ detects inflammable gas, when the upset of F9 output terminal is low level O, having relay J 2 adhesives to drive A.C.D. carries out when turn-offing the leaking source action, Sheffer stroke gate YF1 input end is O, the upset of bistable state output terminal also remains low level O, diode D12 ends, by YF3, YF4, R17, the oscillator that C9 forms, amplify by triode BG5, make LED 4 send one bright one dark flashing light alarm indication all the time, tell people's coal gas to have leaking source to turn-off, need check and repair, after leaking source is repaired, or when normally using, with hand the nut that resets (4) of A.C.D. is up carried, electromagnet (2) does not have electricity, and the moving iron core (3) of electromagnet is released at electromagnet spring (1), and the nut that will reset blocks, sealing block (12) is promptly removed from air admission hole (13), control device is in open state, presses reset button AN2 simultaneously, low level of Sheffer stroke gate YF2 zero setting end ground connection input.The bistable circuit output terminal also overturns and remains 1, diode D12 conducting, multivibrator YF3, YF4, R17, the C9 failure of oscillations, three pipe pipes by and luminotron LED4 recovers to close dark state;
This combustible gas leakage automatic alarm and cuiting off device, its detection, utmost point well, control section and shut-off valve are made of one, and also can be that two parts connect by cable, also can be the automatic alarm control units of combustible gas leakage that uses separately.
Shown in accompanying drawing 6, above-mentioned warning switching off device automatically shut down device, nut protruding of resetting also can be the breach (27) on the valve rod (5), described electromagnet also can be one or relative two, moving iron core (3) is stuck on the breach of valve rod (5), electromagnet (2) is fixed on the bonnet cap (6), also can be fixed on the valve gap (8), and this electromagnet tripping device also can be other dropout machine things of electromagnetic start.
As shown in Figure 7, the sealing block (12) of the valve rod of the A.C.D. of above-mentioned this warning switching off device (5) lower end also can be a rigidity spherical, be with an O-ring seal around the air admission hole relative (13) top with valve rod, electromagnet is pushed down O-ring seal by the spherical of valve rod (5) lower end after threading off, the blocking-up leaking source.
As shown in Figure 8, parts also being made of one with valve gap of the bonnet cap of the A.C.D. of above-mentioned this warning switching off device (6).
In order to reduce length and volume, the A.C.D. of this combustible gas leakage automatic alarm and cuiting off device can also be made the relative position that is positioned at reduction valve, and the valve core rod of its valve rod, bonnet cap, valve gap, stage clip and diaphragm seal and reduction valve is on the same axis.
In order further to reduce volume, can also be as shown in Figure 3, the valve rod of the A.C.D. of this combustible gas leakage automatic alarm and cuiting off device (5), bonnet cap (6), valve gap (8), stage clip (7), diaphragm seal (9) also can be positioned at the opposite position of reduction valve, be on the same axis with the valve core rod of reduction valve, the valve pocket of reduction valve is the valve pocket of A.C.D., the end that the reduction valve spool is withstood in the end of valve rod (5).Valve rod (5) is drop-down, and the nut that resets (4) is blocked by the moving iron core (3) of electromagnet, and the end of valve rod (5) and reduction valve spool break away from, and then are in opening.Electromagnet moves iron core (3) and inhales inwards, and the nut that resets is released, and valve rod (5) is upwards pushed away by stage clip (7), withstands the spool (26) of reduction valve, because the leverage of reduction valve spool, reduction valve air admission hole (16) is plugged, and then is in off state.
As shown in Figure 5, the valve core rod that the valve rod of the A.C.D. of this combustible gas leakage automatic alarm and cuiting off device (5), bonnet cap (6) bonnet (29) and the nut that resets (4) can also be positioned at the top and reduction valve of reduction valve is on the same axis, the lower end of valve rod (5) becomes fork-shaped (21), sticking in two minutes has a hole respectively, there is a pin (22) upper end of reduction valve valve core rod, this pin (22) penetrates in two holes on the bifurcated (21) of valve core rod (5), and the diameter of pin (22) is little more many than the diameter in hole.Bonnet (29) is connected by the register pin more than two (23) with the valve gap of reduction valve, and every register pin is with a spring (24) outward with bonnet (29) jack-up, have on the valve rod bonnet hold-down nut, limited block (20) is arranged.To reset during use nut downwards by, pin by the moving iron core (3) of electromagnetism (2).Because the diameter of pin (22) is little more many than the hole on the fork (21), the valve core rod of reduction valve (25) can move up and down, and reduction valve energy regular event plays the pressure regulation effect.When alerting signal, the moving iron core of electromagnet is inhaled into, limited block (20) is released, valve rod (5) and bonnet (29) be jack-up because the elastic force of spring (24) makes progress, two forks (21) of valve rod (5) are pulled upwardly by the valve core rod (25) of pin (22) with reduction valve, the air inlet of reduction valve (16) is blocked by spool (26), is about to inflammable gas and turn-offs.
As shown in Figure 4, the A.C.D. of this combustible gas leakage automatic alarm and cuiting off device can also be provided with separately, does not link to each other with reduction valve.Its air admission hole (13) links to each other with an inlet suction port (18), and the connecting hole (15) of its usefulness of giving vent to anger links to each other with an air outlet adapter (19).Inlet suction port (18) and air outlet adapter (19) can adopt the sebific duct type of attachment, also can adopt to be threaded or the flange type of attachment.Such combustible gas leakage automatic alarm and cuiting off device can be used on the piped gas that does not use reduction valve, also can use between cylinder for liquefied gas and reduction valve, uses as safety device.
Shown in the dotted portion in the accompanying drawing 2, above-mentioned this combustible gas leakage automatic alarm and cuiting off device, described loudspeaker Y, resistance R 8, triode BG2 also can be the hummer HD that is connected between F3 output terminal and the VDD, described LED 3, R14, R15, triode BG4, it also can be the resistance R 16 that is connected between F10 output terminal and the VDD, LED 2, described R18, R19, BG5, LED4, also can be the R21 that is connected between YF4 output terminal and the VDD, LED5.
As shown in Figure 2, aforesaid warning switching off device, after needs start air draft,, also the positive pole of the catching diode D7 of alarm sound part can be connected on the output terminal of not gate F7 after a while again according to whether still having reducibility gas to send alarm sound.
As shown in Figure 2, the detection alarm control section of aforesaid warning switching off device also can be the rectifying and voltage-stabilizing part of using separately (I), sensor sample part (II), start air draft, audible alarm and doorbell part (III) are formed, at doorbell button AN1 two ends and connect a LED 1, as shown in phantom in Figure 2, at this moment LED1 has the energising indication at ordinary times, the indication of when reporting to the police, flashing, become and have the energising indication, flashing light alarm, start air draft, audible alarm, have the combustible gas leakage alarm controller of doorbell function concurrently, relay J 1 also can be used to drive the shut-off valve device of the long-term energising of needs.
As shown in Figure 2, the detection alarm control section of this warning switching off device also can be by rectifying and voltage-stabilizing part (I), sensor sample part (II), flashing light alarm closes valve portion (IV) with driving, close valve after flash of light indication (V) form.
The utility model combustible gas leakage automatic alarm and cuiting off device, can not only in time detect combustible gas leakage, can also send sound and light alarm respectively by delay time, open scavenger fan and discharge inflammable gas, and when inflammable gas continues to leak, in several minutes, (can adjust) and block air admission hole automatically, turn-off leaking source, after turn-offing leaking source, also has the flash of light indication, and have the doorbell function concurrently, both avoided instantaneous and smog that cross, the uneasiness that yellow rice wine steam etc. causes false alarm to cause fundamentally solves the problem of turn-offing leaking source again, thereby can more effectively avoid the people life property loss being taken place because of gas leak, cause and be poisoned to death, the generation of combustion explosion accident is vast coal gas, it is a kind of practical that the liquefied petroleum gas (LPG) user provides, the practical and effective safety feature.
Claims (9)
1, a kind of combustible gas leakage detection alarm is turn-offed the control device of leaking source, by automatic detection, report to the police, control section and execution automatically shut down the shut-off valve of leaking source and partly form, the shut-off valve part of described shutoff leaking source, comprise a reduction valve (10) and a connector (11), it is characterized in that between reduction valve (10) and connector (11), also having an A.C.D., it comprises electromagnet (2), nut (4) resets, valve rod (5), bonnet cap (6), valve gap (8), stage clip (7), diaphragm seal (9), sealing block (12) and valve pocket (14), valve pocket (14) fuses with the valve body (17) of reduction valve, valve gap (8) is fixed on the valve pocket (14), diaphragm seal (9) is between valve gap (8) and the valve pocket (14), valve pocket and valve gap are separated, valve rod (5) is from bonnet cap (6), pass in the middle of valve gap (8) and the diaphragm seal (9), and be tightly connected with diaphragm seal, sealing block (12) is being fixed in the bottom of valve rod, sealing block faces the air admission hole (13) of valve pocket, there is a connecting hole (15) to communicate on the sidewall of valve pocket with the air admission hole (16) of reduction valve, bonnet cap (6) is pressed in stage clip (1) on the back-up ring on the diaphragm seal (9), the nut (4) that resets is fixed on the valve rod upper end, electromagnet is fixed on the valve body (17), the moving iron core (3) of electromagnet is released by electromagnet spring (1), block the flange of the nut that resets (4), electromagnet (2) when action stage clip (7) is pressed to down valve rod by the back-up ring on the diaphragm seal, makes the sealing block (12) of valve rod end cover the air admission hole (13) of valve pocket; Described automatic detection alarm control section comprises rectifying and voltage-stabilizing part (I), sensor sample part (II), start air draft, audible alarm, doorbell part (III), drive and close valve, flashing light alarm part (IV), flashing light alarm indicating section (V) behind the valve of pass, it is characterized in that described startup air draft, audible alarm, doorbell part (III) has a hex inverter IC2, not gate F1 input end links to each other with sensor MQ sampled voltage V1, a R2 is arranged between F1 output terminal and the F6 input end, C3, D5 forms the charging delay circuit of delayed startup air draft, the F6 output terminal has a R3, R4, BG1, J1, the startup air draft circuit that D6 forms, F4, F5, C4, R5, and F2, F3, C5, R7 forms two oscillators respectively, seal in R6 between two oscillators, D8 links to each other, have diode D7 to link to each other between the oscillator Sheffer stroke gate F6, oscillator output end has R8, BG2, the audible segment of loudspeaker Y; A bell button AN1 is arranged between D8 anode and ground; Valve is closed in described driving, flashing light alarm part (IV) has a hex inverter IC3, not gate F12 input end links to each other with sampled voltage V1, the time-delay of being made up of R9, C6, a D9 between F12 output terminal and the F7 input end drives the charging delay circuit that closes valve, the F7 output terminal links to each other with the F8 input end, the guard relay J2 after finishing the pass valve that forms by C7, a R10 between F8 output terminal and the F9 input end, the cold differentiating circuit of electromagnet (2), F9 output terminal are connected to the driving pass valve circuit of R11, R12, BG3, D10, J2 composition; F10, F11, C8, R13 form oscillator, and have catching diode D11, oscillator output end to be connected to the energising of the do just often indication of R14, BG4, R15, LED3 composition between the F12 output terminal, make the luminous component that flashing light alarm is indicated during combustible gas leakage; The indicating section (V) that glistens behind the valve of described pass has one two input four Sheffer stroke gate IC4, Sheffer stroke gate YF1, YF2 forms a bistable circuit, its input end of putting 1 end YF1 links to each other with the F9 output terminal of IC3, put between the input end of 0 end YF2 and the VDD R20 is arranged, and link to each other with reset button AN2 one end, the other end of AN2 links to each other with ground, YF3, YF4, R17, be connected to diode D12 between oscillator that C9 forms and the bistable state output terminal, oscillator output end is connected to R18, R19, BG5, the luminous component of LED4, the normally opened contact J1-1 of relay J 1 with manually open and K and connect the back and link to each other with accessory power outlet CE, the normally opened contact J2-1 of relay J 2 be connected across the civil power two ends after the coil of the electromagnet (2) of A.C.D. is connected.
2, control device as claimed in claim 1, the flange that it is characterized in that the nut that resets of described A.C.D. is the breach (27) on the valve rod (5), described electromagnet is two relative electromagnet, be fixed on the bonnet cap, other tripping mechanisms that described electromagnet tripping device is an electromagnetic start, the sealing block (12) of described valve rod lower end is a rigidity spherical, the air admission hole relative with valve rod (13) top is with an O-ring seal (28), and described bonnet cap (6) is parts that are made of one with valve gap.
3, control device as claimed in claim 1, it is characterized in that described A.C.D. is positioned at the position relative with reduction valve, its valve rod (5), bonnet cap (6), valve gap (8), the nut that resets (4), stage clip (7) and diaphragm seal (9) are on the same axis with the valve core rod of reduction valve.
4, control device as claimed in claim 1, the valve rod (5) that it is characterized in that described A.C.D., bonnet cap (6), valve gap (8), stage clip (7), diaphragm seal (9) and the nut that resets (4) are positioned at the opposite position with reduction valve, be on the same axis with the valve core rod of reduction valve, the valve pocket of reduction valve is the valve pocket of A.C.D., the end of valve rod (5) is near the end of reduction valve spool, during electromagnet (2) action, valve rod (5) jack-up upwards under the stage clip effect, reduction valve valve core rod (25) is moved upward, and pulling spool (26) covers reduction valve air admission hole (16).
5, control device as claimed in claim 1, the valve rod (5) that it is characterized in that described A.C.D., bonnet cap (6), bonnet (29) and the nut that resets (4) be positioned at reduction valve above, be on the same axis with the valve core rod of reduction valve, the lower end of valve rod (5) becomes fork-shaped (21), sticking in two minutes has a hole respectively, there is a pin (22) upper end of reduction valve valve core rod, this pin (22) penetrates in the hole on the bifurcated (21) of valve core rod (5), and the diameter of pin (22) is little more many than the diameter in hole, bonnet (29) is connected by the register pin more than two (23) with the valve gap of reduction valve, every register pin is with a spring (24) outward with bonnet (29) jack-up, the bonnet hold-down nut is arranged, limited block (20) on the valve rod.
6, control device as claimed in claim 1, it is characterized in that described A.C.D. is to be provided with separately, do not link to each other with reduction valve, its air admission hole links to each other with an inlet suction port (18), and the connecting hole of its usefulness of giving vent to anger links to each other with an air outlet adapter (19).
7, control device as claimed in claim 1, it is characterized in that described automatic detection alarm control section by rectifying and voltage-stabilizing part (I), sensor sample part (II), drive and close valve, flash of light indicating section (IV), close the indicating section (V) that glistens behind the valve and form.
8, control device as claimed in claim 1, it is characterized in that partly form by (I), sensor sample (II), startup air draft, sound and light alarm, doorbell part (III) by rectifying and voltage-stabilizing for described detection alarm control section, bell button AN1 two ends also are connected to the indication of do energising at ordinary times, make the LED 1 of flashing light alarm during MQ contact inflammable gas.
9, control device as claimed in claim 1, R8, BG2, the loudspeaker Y that it is characterized in that described automatic detection alarm control section is the hummer HD that is connected between F3 output terminal and the VDD, described R14, BG4, R15, LED3 are R16, the LED2 that is connected between F10 output terminal and the VDD, described R18, R19, BG5, LED4 are R21, the LED5 that is connected between YF4 output terminal and the VDD, and the positive pole of described catching diode D7 links to each other with the output terminal of not gate F7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92201529 CN2110251U (en) | 1992-01-23 | 1992-01-23 | Automatic alarm shutoff apparatus for combustible gas leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92201529 CN2110251U (en) | 1992-01-23 | 1992-01-23 | Automatic alarm shutoff apparatus for combustible gas leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2110251U true CN2110251U (en) | 1992-07-15 |
Family
ID=4948556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92201529 Granted CN2110251U (en) | 1992-01-23 | 1992-01-23 | Automatic alarm shutoff apparatus for combustible gas leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2110251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111013347A (en) * | 2019-12-11 | 2020-04-17 | 宁夏泰富能源有限公司 | Tail gas treatment device |
-
1992
- 1992-01-23 CN CN 92201529 patent/CN2110251U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111013347A (en) * | 2019-12-11 | 2020-04-17 | 宁夏泰富能源有限公司 | Tail gas treatment device |
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